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Siliceous-rock

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Rocks composed of more than 50% silica of biogenic or chemical origin.


Classification of Siliceous-rock

Sub-divisions of Siliceous-rock

Mineralogy of Siliceous-rock

Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
Opal-AA petrological term for Opal-A.
Silica > Opal-CSiO2 · nH2O
Silica > Opal-CTSiO2 · nH2O
Silica > QuartzSiO2

Internet Links for Siliceous-rock

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